Oaxaca cichlid - Vieja zonata

Scientific name: Vieja zonata

Common name: Oaxaca cichlid

Family: Cichlidae

Usual size in fish tanks: 23 - 26 cm (9.06 - 10.24 inch)

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Recommended pH range for the species: 7 - 8.1

Recommended water hardness (dGH): 7 - 24°N (125 - 428.57ppm)

0°C 32°F30°C 86°F

Recommended temperature: 23 - 26 °C (73.4 - 78.8°F)

The way how these fish reproduce: Spawning

Where the species comes from: Central America

Temperament to its own species: peaceful

Temperament toward other fish species: aggressive to smaller

Usual place in the tank: Middle levels

Oaxaca Cichlid Overview

The Oaxaca Cichlid (Vieja zonata) is a large, vibrant species native to the waterways of Central America, specifically Mexico. These fish are known for their striking color patterns, which become more pronounced as they mature. Juvenile Oaxaca Cichlids typically display a more subdued color pattern compared to adults, which intensifies as they grow. In captivity, Oaxaca Cichlids can grow to a size of 23 to 26 cm (9.06 to 10.24 inches), making them ideal for large, well-structured aquariums. While peaceful among their own kind, they tend to be aggressive toward smaller fish, especially in a territorial setting. Oaxaca Cichlids are known to rearrange tank décor, so a sturdy setup is essential for keeping them in a comfortable environment.

Tank Requirements

Due to their large size and active nature, Oaxaca Cichlids require a spacious aquarium of at least 350 liters (92 gallons). These fish are territorial and appreciate ample swimming space, along with solid structures such as rocks and driftwood to establish their domains. It is important to anchor any décor securely, as these cichlids are notorious for moving objects around the tank. Creating visual barriers with rocks or driftwood can help reduce territorial disputes.

Maintain water temperatures between 23-26°C (73.4-78.8°F) with a pH range of 7 to 8.1. The water hardness should be kept between 7 to 24°N (125 - 428.57 ppm). Since Oaxaca Cichlids produce a significant amount of waste, a strong filtration system is necessary to maintain water quality. Regular water changes (20-30% weekly) are essential to prevent the buildup of toxins and to keep the fish healthy. Additionally, monitor water parameters frequently to ensure stable conditions, especially ammonia, nitrites, and nitrates.

Food and Feeding

Oaxaca Cichlids are omnivores, and their diet in captivity should reflect their natural dietary habits. A high-quality cichlid pellet should serve as the staple food, but it is beneficial to supplement this with spirulina flakes to promote health and coloration. To add variety, offer protein-rich treats such as chopped earthworms, bloodworms, prawns, and white worms 2-3 times per week. Providing a mix of plant-based and protein-based foods helps ensure balanced nutrition and vibrant coloration. Feed them small portions 2-3 times daily to avoid overfeeding and maintain water quality.

Sexing

Sexing Oaxaca Cichlids is relatively straightforward. Males tend to be larger than females and display more intense coloration. Males also develop extended dorsal and anal fins, while females have rounder fins. In addition, mature males may develop a prominent nuchal hump on their heads, which is absent in females. Observing these traits during breeding periods can further help distinguish the sexes.

Breeding

Oaxaca Cichlids are substrate spawners, selecting a flat surface, such as a rock, as a spawning site. The female will lay her eggs on the chosen surface, and both parents will guard the eggs fiercely. During this time, the male can become highly aggressive, so it's important to monitor the pair and provide ample space. The use of tank dividers can help reduce aggression during breeding, especially in smaller tanks. The eggs typically hatch within 2-3 days, and the fry become free-swimming a few days later. At this stage, the fry can be fed newly hatched brine shrimp or finely crushed flakes. To ensure the best survival rate, it may be necessary to separate the fry from the parents, especially in community tanks.

Lifespan

With proper care, Vieja zonata can live up to 10 years. Providing a well-maintained environment with stable water conditions and a balanced diet is key to their longevity and overall health. Minimizing stress by ensuring tank mates are compatible and avoiding overcrowding will help them thrive for their full lifespan.

Compatibility and Tank Mates

Oaxaca Cichlids are known for their aggressive behavior, particularly toward smaller or more timid fish. It is best to house them with similarly sized, robust species that can tolerate their territorial tendencies. Suitable tank mates include other large cichlids, such as Jack Dempsey Cichlids and Oscars. Peaceful but sturdy fish like Silver Dollars and Plecos can also make good companions, as they are less likely to provoke territorial disputes. Avoid keeping them with small or delicate species, as they may become targets of aggression. Additionally, ensure that the tank is large enough to accommodate all inhabitants, as overcrowding can increase territorial disputes. Rearranging tank décor before introducing new fish can help minimize aggression by disrupting established territories.

Short Description

The Oaxaca Cichlid (Vieja zonata) is a large, colorful cichlid from Central America, known for its territorial behavior and tendency to rearrange tank décor. Growing up to 26 cm (10.24 inches), these fish require spacious tanks with sturdy decorations. While peaceful with their own kind, they can be aggressive toward smaller species. With proper care, they can live up to 10 years, making them a rewarding species for experienced aquarists who can provide the appropriate tank setup and care.

Picture

Bought by aqua-fish.net from jjphoto.dk.